Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50 is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 150mm nominal stroke and a rear adjustable-stroke stopper — trim up to 50mm for a usable window of 100–150mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke150 mm
- Adjustable100–150 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50
The AirTAC MBLCJ20X150-50 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. You can trim up to 50mm of travel at the rear, yielding a usable stroke window of 100-150mm. Driven by air through its G1/8 port, the Ø8mm carbon-steel rod delivers 157N push and 132N pull at 0.5MPa. This 150mm travel suits extended compact ejection or gating tasks.
Unlike the base MBLJ with its fixed rubber bumper, this MBLCJ variant uses screw-tunable end-of-stroke deceleration to absorb kinetic energy, protecting the end covers during faster cycling. The riveted rolling-packed barrel and heterogeneous grease-retaining piston seal ensure stable friction. Note this specific SKU lacks a built-in magnet, meaning it cannot support CMSG, DMSG, or EMSG electronic position sensors. The rear stopper sets your travel end-point, while the cushion governs deceleration; neither acts as a mechanical lock to hold a load in place without live air pressure.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 150 mm |
| Adjustable window | 100–150 mm (trim 50 mm) |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable air cushion (both ends) |
| Max standard stroke | Up to 300 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×150 | Nominal stroke length in mm. |
| -50 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50 Is Used
PCB Conveyor Gating
Uses the 100-150mm stroke window to actuate a pop-up guide for 1.5mm thick PCBs on a SMT line, relying on the 157N push force to hold panels without crushing components.
Light-Part Ejection
Tuned air cushions absorb the impact of ejecting 0.5kg molded plastic caps at the end of a 150mm stroke, preventing end-cover damage during 600 cycles per minute.
Film Roll Tensioning
Applies a steady 132N pull force on a packaging machine dancer arm to maintain tension on a 20-micron polymer web, using the rear stopper to dial the exact 125mm travel limit.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50 the Right Cylinder?
Stepping down in bore to the adjacent 20mm class is not possible, but stepping up to the 25mm bore yields a higher 245N push at 0.5MPa if your payload exceeds the 157N limit. Choose MBLCJ over MBLJ when your moving mass requires tunable pneumatic damping rather than a simple fixed bumper. Keep in mind the rear adjuster is strictly a travel stop, and the air cushion only decelerates; neither will hold position against a drifting load without continuous air pressure. Mounting is restricted to Basic, FA flange, or LB foot styles; this series offers no SDB pivot or back-cover options. For a direct replacement, match the 20mm bore, 150mm stroke, 50mm adjust code, G1/8 port, PT thread, and confirm no magnet is required. Given the 150mm stroke on an 8mm rod, external guiding is recommended to prevent rod bending under side-loads.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50 FAQ
At 0.5MPa, the 20mm bore provides 157N push and 132N pull. At 0.7MPa, the push increases to 220N. The maximum theoretical force is 32kgf at 1.0MPa.
The rear adjuster is a mechanical travel stop that sets your usable stroke window between 100-150mm. The adjustable air cushion is a screw-tunable valve that decelerates the piston near the end covers. Neither holds the load in place without air pressure; you need an external lock for that. This SKU also lacks a magnet, so no sensor can be fitted.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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